Simulation of Jet-Induced Geysers in Reduced Gravity

Marchetta, Jeffrey G.; Benedetti, Robert H.

doi:10.1007/s12217-008-9095-3

Cited by 7 publications

(1 citation statement)

References 14 publications

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“…Prediction of the geyser form caused by axial jet mixing was performed using computational fluid dynamics (CFD) [21][22][23] . The CFD studies were developed from the same set of experimental data 19,20 using the jet-Weber number, jet-Bond number, and tank-Bond number to describe the geyser formation and predict geyser height.…”

Section: Introductionmentioning

confidence: 99%

One-dimensional Droplet Model for Prediction of Jet-tip Height of Subcooling Mixing Jet for Cryogenic Propellant Storage Tank

Kawanami

Takeda

Matsushima

et al. 2021

Preprint

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This study proposes a one-dimensional droplet model to predict the jet-tip height of a subcooling mixing jet issuing from the bottom of a cryogenic propellant storage tank. Cryogenic liquids, such as liquid hydrogen and liquid oxygen, are used as propellants and oxidants in spacecraft propulsion systems that require long-term storage in a closed tank. However, thermal stratification forms near the gas-liquid interface during long-term storage of cryogens due to heat flowing into the tank from the surrounding environment. In addition, boil-off gas (BOG) is generated from the interface, which causes increased pressure in the tank. To reduce the BOG, it is effective to destroy the thermal stratification by mixing in the cold jet issuing from the bottom of the tank. Ground experiments using FC-72 and water as test fluids are conducted to investigate the behavior of the jet using the proposed one-dimensional spherical droplet model as the tip of the jet. The jet behavior is visualized using the Shadowgraph system and the height of the jet-tip is investigated under various experimental conditions. The proposed model is also verified by comparison with experimental data available in the literature. The results show that the proposed model aligns well with the experimental data.

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Section: Introductionmentioning

confidence: 99%

One-dimensional Droplet Model for Prediction of Jet-tip Height of Subcooling Mixing Jet for Cryogenic Propellant Storage Tank

Kawanami

Takeda

Matsushima

et al. 2021

Preprint

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Experimental Investigation of Liquid Interface Stability During the Filling of a Tank in Microgravity

Govindan

Dreyer

2023

Microgravity Sci. Technol.

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The storage of propellants in space as well as the transfer and filling of spacecraft tanks is a prerequisite for future long-term space exploration missions. In this work, the vented filling of a partially filled tank, which is envisioned as a spacecraft tank, was investigated experimentally under compensated gravity in the Bremen Drop Tower. Experiments were performed with a partially filled tank and a test liquid HFE-7500. The drop tower provides 9 s of compensated gravity. The shape of the free liquid surface inside a right circular cylinder changes from the normal gravity configuration to a free fall configuration during the test. The filling was initiated after 3.5 s and continued until the end at 9 s. The interaction of the incoming liquid jet with the liquid interface was studied for different volumetric flow rates. A stable, but not steady liquid interface was characterized by a deformation due to the incoming liquid jet and the formation of a geyser. The growth of the geyser and the following disintegration into liquid droplets indicated an unstable liquid interface. Subcritical, critical and supercritical regimes of the volumetric flow rates were identified to classify stable and unstable liquid interfaces. The critical Weber number was found to be 1.04, which corresponds to a critical volumetric flow rate of 1.30 mL s-1. This critical Weber number was compared with the existing literature. Additionally, the behaviour of the liquid interface during the reorientation of the liquid inside the tank was observed.

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Experimental investigation of abnormal pressure drop in branch feedlines with a five-port spherical cavity in liquid oxygen engines

Xie

Wang

et al. 2019

Cryogenics

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Simulation of Jet-Induced Geysers in Reduced Gravity

Cited by 7 publications

References 14 publications

One-dimensional Droplet Model for Prediction of Jet-tip Height of Subcooling Mixing Jet for Cryogenic Propellant Storage Tank

One-dimensional Droplet Model for Prediction of Jet-tip Height of Subcooling Mixing Jet for Cryogenic Propellant Storage Tank

Experimental Investigation of Liquid Interface Stability During the Filling of a Tank in Microgravity

Experimental investigation of abnormal pressure drop in branch feedlines with a five-port spherical cavity in liquid oxygen engines

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